Or advertise FOR space like Tang. Or, what was that Slim-Jim-looking thing that those lucky astronauts got to eat in space that they tried to convince the rest of us to eat -- you know, for America?? It looked something like #4 on the Bristol Stool Chart.
The use of advertising in outer space or related to space flight. While there have only been a few examples of successful marketing campaigns, there have been several proposals to advertise in space, some even planning to launch giant billboards visible from the Earth. (Wikipedia)